-- @owner: @kyeleze
-- @date: 2022/5/13
-- @testpoint: 转换函数第二个参数非integer，建立assignment模式下转换关系;合理报错

--step1:建立自定义类型转换函数;expect:创建函数成功
create or replace function timezone_to_secondsinteger
(
    in time with time zone,
    in varchar
)
returns integer
as
$$
declare
seconds integer;
begin
select (
extract(hour from $1)::integer * 3600
+ extract(minute from $1)::integer * 60
+ extract(seconds from $1)::integer* 1)*$2::integer into seconds;
return seconds;
end;
$$ language plpgsql;
/
--step2:创建自定义assignment转换关系;expect:合理报错
drop cast if exists (time with time zone as integer) cascade;
create cast(time with time zone as integer) with function timezone_to_secondsinteger(time with time zone,varchar) as assignment;

--step3:清理环境;expect:清理成功
drop function if exists timezone_to_secondsinteger(time with time zone,varchar) cascade;
